Pneumatic projectile



(No Model.)

. W. T. CHAMBERLAIN.

PNEUMATIC PROJECTILE.

Patented Jan. 13, 1885.

ATTORNEY,

FFlCE NITED STATES ATENT \Vl LLIAM T. CHAMBERLAIN, OF NORlVlGI-I, CONNECTICUT, ASSIGNOR O11 T\VO THIRDS TO BENJAll'IIN M. PRINCE, OF SAME PLACE, AND XVILLTAM CROSS- LEY, OF RAXDOLPH, MASSACHUSETTS.

PNEUMATIC PROJECTILE.

SPECIFICATION forming part of Letters Patent No. 310,649, dated January 13, 1885.

Application filed May 27,186]. (No model.)

10 all who/2t it 'HL/Z'LI/ concern.- air-inlet, d, which is covered by an inwardly lie it known that I, \VIIJJAM T. Gniuiiuauopening valve, (1, which is properly secured 5o LAIN, a citizen of the United States, residing within the chamber. Air is forced into the at Norwich, in the county of New London, chamber A through the inlet (1 in any desira- State of Connecticut, haveinventcdauewand blc manner, the valve (1" opening to permit useful Improvement in Projectiles, which imthe same, it being noticed that the slots 0 are provcment is fully set forth in the following closed by the valve E, and when the projectile specification and accompanying drawings, in is charged with the compressed air the valve whichd closes, and the projectile is introduced into Figure]. is a side elevation of a projectile a gun or other suitable fire-arm similar to a cmbodyin g my invention, the parts being sepcartridge,said arm having a firing-pin adapted a rated. Fig. 2is a longitudinal section thereto strike the plug ll. \Vhcn the plug 13 is of. Fi 3 is a transverse section thereof. struck, the pin 1? moves the valve E and un- Similar letters of reference indicate correcovers the slots 0, thus liberating the com- I 5 spending parts in the several figures. pressed air, the reaction whereof 1n the bore hlyinvention consists of a projectile having of the arm forcibly impels the projectile from a chamber for compressed air, and an inlet the arm, the result being accomplished withand an outlet for the same, a sliding valve, out the smell, smoke, heat, and fouling (end and a movable plug, said valve primarily ency of powder-charged projectiles, another 20 preventing the escape of the compressed air, advantage of the invention being that by its and the plug moving said valve from its seat use the danger incident to the transportation to permit the discharge of said air, whereby and handling of explosives is avoided. The the projectile is impelled, as will be hereinvalve E is hermetically sealed or cemented on after fully set forth. its seat on the guide, so as to prevent escape Referring to the drawings, A represents a of air from the chamber I) prior to the dishollow projectile, which is formed with asuitcharge of the projectile, the sealing medium able point, (I, a chamber, Z), and a tubular readilybreakingwhen the plug B is operated. 7 base, 0, the latter having passed through it a In order to prevent movement of the plug plug, B, whose inner end is fitted Within a prior to use of the projectile, I employ a pin, 0 tubular guide, I), which projects from the G, and form in the wall of. the base 0 and the plug 13 into the projectile, and has slots or plug B openings e 0', through which said pin openings 0, whereby the guide is in connnuis passed, thus controlling the plug, said pin nication with the projectile, it being noticed being removed when the projectile is inserted that the diameter of the rear end of the plug in the firearm. 5 is less than that of the opening in the base 0, Having thus described myinvention, what I whereby an air-passage is formed in said base, claim as new, and desire to secure by Letters the same being in communication with the Patent, is- 5 guide 1), and consequently with the interior 1. A projectile having a chamber for comof the projectile. pressed air, an inlet for the same, a valve for 0 E represents a sleeve or valvc,of cylindrical closing said inlet, a movable plug in the base, a

form,which is fitted on the guide D and abuts sliding valve attached to said plug, andatubuagainst the neck or shoulder of the base 0, lar guide attached to the base, said guide hav- 9 covering the slots 0, thus closing the commuing slots or openings in communication with nication between the chamber I) and guide D, the air-chamber and the discharge-passage of 4 5 F represents a pin,which is connected with the projectile, and said sliding valve covering the plug 3, and has its ends passed through the slots of the guide and made removable the slots 0 and engaging with the valve E. when the plug is struck, substantially as and In the wall of the chamber 1) is an opening or for the purpose set forth.

2. In an air-charged projectile, a tubular which it is connected, substantially as and for guide in the air-chambeiywith slots or openthe purpose set forth. ings in communication with said chamber and I T the discharge-passage of the projectile, in VILLIAM OHZQMBERLAD" 5 combination with a hermetically-sealed slid- \Vitnesses:

ing valve fitted on said guide over the slots JOHN A. \VIEDERsHEiM,

and movable by the action of a plug with A. P. GRANT. 

